Wednesday 28 May 2014

Difference Between Windows 8 and Windows 8.1



Parameter
Windows 8
Windows 8.1
Definition
It is a Personal Computer Operating System Designed by Microsoft and is preceded by Windows 7 Operating System.
It is enhanced version of windows 8 operating system.
Start Button
Start Button is not Present in Windows 8.
Start Button is restored to task bar in Windows 8.1 to open start screen.
App  Snapping
Only two app can be snapped onto a single display.
4 Applications can be snapped onto a single display depending upon screen size.
Message App
Message App is available in Windows 8.
Message is Replaced by Skype, which allows users to accept calls directly from lock screen.

Wednesday 21 May 2014

Difference Between Database and Data Warehouse



Parameter
Database
Data Warehouse
Definition
Organized Collection of Data is called database.
Database of Databases is Called Data Warehouse.
Purpose
It is designed to allow the definition, creation, querying, update, administration of data (Transaction Processing).
It is a relational database that is designed for query and analysis rather than transaction processing.
Data Type
Data stored in Database is up to date.
Current and Historical Data is Stored in Data Warehouse.
Orientation
Transaction Oriented: e.g. Each Transaction of Bank Customer is written to database and is interpreted as Accounting Database.
Subject Oriented: The data in the data warehouse is organized so that all the data elements relating to the same real-world event or object are linked together.

Tuesday 20 May 2014

Difference Between Data Mining and Machine Learning


Parameter
Data Mining
Machine Learning
Definition
Data mining is a process to extract information from a data set and transform it into an understandable structure for further use.
It is a Technique that concerns the construction and study of systems that can learn from data.
Focus
It focuses on the discovery of unknown properties in the data.
It focuses on prediction, based on known properties learned from training data.
Database Size
It is an automatic or semi-automatic analysis that is performed on large quantities of data.
It is generally performed on small databases to increase accuracy.
Types
Association Rules
Classification
Clustering
Sequential Patterns
Sequence Similarity
Supervised
Un Supervised
Reinforcement

Monday 12 May 2014

Difference Between Blackbox and Whitebox Testing

Parameter
Black Box Testing
White Box Testing
Definition
It is a Software Testing Technique that examines the functionality of an Application without peering into its working or coding.
It is a Software Testing Technique to test internal structure and working of an Application Software.
Technique Applied in
This Technique Applied in Unit, Integration, System and Acceptance levels of Software Testing Process.
This Technique Applied in Unit, Integration and system levels of Software Testing Process.
Test Procedures
For Black box Testing Specific knowledge of the application's coding/internal structure and programming in general is not required.
For White box Testing Specific knowledge of the application's coding/internal structure and programming is required.

Difference Between MAC and IP address

Parameter
MAC Address
IP Address
Acronym for
media access control address
Internet Protocol Address
Used for
It is a unique identifier that is assigned to network interfaces for communicating on the physical network segments.
It is a numerical value that is assigned to all the participating devices in a network. i.e. Servers, Computers, Printers, WAP, Laptops etc.
Provided BY
It is generally provided by the manufacturer of the NIC cards and is stored in its hardware.
It is provided by the ISP (Internet Service Provider) or by the Network Administrator.
Length
It is 48 bit address which contains 6 groups of 2 hexadecimal digits, separated by either hyphens (-) or colons (:)
E.g. 00:FF:FF:AB:BB:AA
Or 00-FF-FF-AB-BB-AA
IPv4 uses 32 bit address in dotted notations, whereas IPv6 Uses 128 bit address in hexadecimal notations.

e.g. IPv4      192.168.1.1
IPv6    FFFE:F200:3204:0B00: 0122:4555:8001:AB00

Sunday 2 March 2014

Difference Between OSI and TCP/IP Reference Models



Parameter
OSI Reference Model
TCP/IP Model
Clarification between Services, Interfaces and Protocols
OSI Model clearly distinguishes between Services, Interfaces and Protocols. Each layer performs some services to upper layers, layer interfaces tells the processes above it how to access it, and different protocols are used by different layers as per their needs until a job is not finished.
TCP/IP model does not clearly distinguish between Services, Interfaces and Protocols.
Protocol Biasing
This model is not biased for a particular set of protocols and was developed before corresponding protocols invention.
This Model was developed after inventing corresponding protocols and just was description of existing protocols.
Layers
It is a Seven Layered Model. Which are as follows :
a)      Physical Layer
b)      Data Link Layer
c)       Network Layer
d)      Transport Layer
e)      Session Layer
f)       Presentation Layer
g)      Application Layer
It is a 4 Layered Model. Which are as follows:
a)      Subnet Layer
b)      Internet Layer
c)       Transport layer
d)      Application Layer

Thursday 6 February 2014

Difference Between Synchronous TDM and Statistical TDM

Parameter
Synchronous TDM
Statistical TDM
Working
In Synchronous TDM data flow of each input connection is divided into units and each input occupies one output time slot.
In Statistical TDM slots are allotted dynamically. i.e. input line is given slots in output frame if and only if it has data to send.
No. of Slots
In Synchronous TDM no. of slots in each frame are equal to no. of input lines.
In Statistical TDM, No. of slots in each frame are less than the no. of input lines.
Buffers
Buffering is not done, frame is sent after a particular interval of time whether someone has data to send or not.
Buffering is done and only those inputs are given slots in output frame whose buffer contains data to send.
Addressing
Slots in Synchronous TDM carry data only and there is no need of addressing. Synchronization and pre assigned relationships between input and outputs that serve as an address.
Slots in Statistical TDM contain both data and address of the destination.